improve error handling

scm-webapp/src/main/webapp/resources/js/i18n/de.js

@@ -501,3 +501,12 @@ if (Sonia.scm.Main){
   });
 
 }
+
+if (Sonia.panel.SyntaxHighlighterPanel){
+  
+  Ext.override(Sonia.panel.SyntaxHighlighterPanel, {
+    loadErrorTitleText: 'Fehler',
+    loadErrorMsgText: 'Die Datei konnte nicht geladen werden'
+  });
+  
+}

scm-webapp/src/main/webapp/resources/js/panel/sonia.panel.syntaxhighlighterpanel.js

@@ -137,6 +137,9 @@ Sonia.panel.SyntaxHighlighterPanel = Ext.extend(Ext.Panel, {
   shPath: 'resources/syntaxhighlighter',
   contentUrl: null,
   
+  loadErrorTitleText: 'Error',
+  loadErrorMsgText: 'Could not load file',
+  
   contentLoaded: false,
   scriptsLoaded: false,
   
@@ -211,8 +214,12 @@ Sonia.panel.SyntaxHighlighterPanel = Ext.extend(Ext.Panel, {
         this.contentLoaded = true;
         this.highlight();
       },
-      failure: function(){
-        // TODO
+      failure: function(result){
+        main.handleFailure(
+          result.status, 
+          this.loadErrorTitleText, 
+          this.loadErrorMsgText
+        );
       }
     });
   },